I _______ as the manager in this company–May I know since when?

Such animals as dinosaurs died out becausethey couldn’t ____ to the sudden change of the climate.

There are _______ students in the sports meeting. _________ of the students come from No.1 Middle School.

I need some help. Can you _______ the bananas for fruit salad— Yes, Mum. But where’s the knife

Why were you so late for work today— ____ to the office was not very easy thismorning because of the traffic